<template>
    <div>
         <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
<el-card>
    <el-alert  
    title="添加商品信息"
    type="info"
    center
    show-icon>
  </el-alert>


  <el-steps :space="200" :active="activeIndex-0" finish-status="success" align-center>
  <el-step title="基本信息"></el-step>
  <el-step title="商品参数"></el-step>
  <el-step title="商品属性"></el-step>
  <el-step title="商品图片"></el-step>
  <el-step title="商品内容"></el-step>
  <el-step title="完成"></el-step>
</el-steps>

<el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px" label-position="top" >
 <el-tabs :tab-position="'left'"  v-model="activeIndex" :before-leave="beforeTabLeave" @tab-click="tabClicked" >
    <el-tab-pane label="基本信息" name="0">
        <el-form-item label="商品名称" prop="goods_name">
            <el-input v-model="addForm.goods_name"></el-input>
        </el-form-item>
           <el-form-item label="商品价格" prop="goods_price">
            <el-input v-model="addForm.goods_price" type="number"></el-input>
        </el-form-item>
           <el-form-item label="商品重量" prop="goods_weight" >
            <el-input v-model="addForm.goods_weight"  type="number"></el-input>
        </el-form-item>
           <el-form-item label="商品数量" prop="goods_number">
            <el-input v-model="addForm.goods_number" type="number"></el-input>
        </el-form-item>
        <el-form-item label="商品分类" prop="goods_cat">
            <el-cascader
    v-model="addForm.goods_cat"
    :options="catelist"
    :props="cateProps"
    @change="handleChange"></el-cascader>
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品参数"  name="1">
        <el-form-item v-for="item in manyTableData"    :key="item.attr_id" :label="item.attr_name">

        <el-checkbox-group v-model="item.attr_vals">
         <el-checkbox v-for="(cb,i) in item.attr_vals" :key="i" :label="cb" border></el-checkbox>
         </el-checkbox-group>

        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品属性"  name="2">
        <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
            <el-input v-model="item.attr_vals"></el-input>
            
        </el-form-item>
    </el-tab-pane>
    <el-tab-pane label="商品图片"  name="3">
        <el-upload
  :action="uploadURL"
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  list-type="picture"
  :headers="headerObj"
  :on-success="handleSuccess"
  >
  <el-button size="small" type="primary">点击上传</el-button>
</el-upload>
    </el-tab-pane>
      <el-tab-pane label="商品内容"  name="4">
          <quill-editor v-model="addForm.goods_introduce"></quill-editor>

          <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
      </el-tab-pane>
      
  </el-tabs>
</el-form>


</el-card>

<el-dialog
  title="图片预览"
  :visible.sync="previewVisible"
  width="50%">
<img :src="previewPath" alt="" class="previewImg">
</el-dialog>


    </div>
</template>
<script>
import _ from 'lodash'
export default {
    data(){
        return{
            activeIndex:'0',
            addForm:{
                goods_name:'',
                goods_weight:0,
                goods_price:0,
                goods_number:0,
                goods_cat:[],
                pics:[],
                goods_introduce:'',
                attrs:[]
            },
            addFormRules:{
                goods_name:[
                    { required:true, message:'请输入商品名称',trigger:'blur'}
                ],
                 goods_price:[
                    { required:true, message:'请输入商品价格',trigger:'blur'}
                ],
                 goods_weight:[
                    { required:true, message:'请输入商品重量',trigger:'blur'}
                ],
                 goods_number:[
                    { required:true, message:'请输入商品数量',trigger:'blur'}
                ],
                goods_cat:[
                     { required:true, message:'请选择商品分类',trigger:'blur'}
                ]
            },
            catelist:[],
            cateProps:{
                label:'cat_name',
                value:'cat_id',
                children:'children',
                expandTrigger: 'hover'
            },
            manyTableData:[],
             onlyTableData:[],
             uploadURL:'http://127.0.0.1:8888/api/private/v1/upload',
             headerObj:{
                 Authorization:window.sessionStorage.getItem('token')
             },
             previewPath:'',
             previewVisible:false
        }
    },
    created(){
        this.getCateList()
    },
    methods:{
        add(){
            this.$refs.addFormRef.validate(async vaild=>{
                if(!vaild){
                    return this.$message.error("请填写表单的必要项")
                }
            const form=_.cloneDeep(this.addForm)
            form.goods_cat=form.goods_cat.join(',')


            this.manyTableData.forEach(item=>{
                const newInfo={
                    attr_id:item.attr_id,
                    attr_value:item.attr_vals.join(' ')
                }
                this.addForm.attrs.push(newInfo)
            })

            this.onlyTableData.forEach(item=>{
                const newInfo={ 
                    attr_id:item.attr_id,
                    attr_value:item.attr_vals               
                }
                this.addForm.attrs.push(newInfo)
            })
            form.attrs=this.addForm.attrs
           const{data:res}= await this.$http.post('goods',form)
           if (res.meta.status!==201) {
               return this.$message.error("添加商品失败")
           }
           this.$message.success('添加商品成功！')
           this.$router.push('/goods')

            })
            
        },
        handleSuccess(response){
          const picInfo={ pic:response.data.tmp_path}
          this.addForm.pics.push(picInfo)
          console.log(this.addForm);
          
        },
        handlePreview(file){
            this.previewPath=file.response.data.url
            this.previewVisible=true
        },
        handleRemove(file){
            const filePath=file.response.data.tmp_path
            const i=this.addForm.pics.findIndex(x=>x.pic===filePath)
            this.addForm.pics.splice(i,1)
            console.log(this.addForm)
        },
       async getCateList(){
          const{data:res}=await  this.$http.get('categories')
          if(res.meta.status!==200){
              return this.$message.error('获取商品分类数据失败')
          }
            this.catelist=res.data
            
        },
    handleChange(){
      if(this.addForm.goods_cat.length!==3)[
          this.addForm.goods_cat=[]
      ]
        
    },
    beforeTabLeave(activeName,oldActiveName){
    if(oldActiveName==='0'&&this.addForm.goods_cat.length!==3){
        this.$message.error('请选择商品分类！')
        return false
    }
    },
   async tabClicked(){
        if(this.activeIndex==='1'){
            const{data:res}= await this.$http.get(`categories/${this.cateId}/attributes`,{
                params:{sel:'many'}
            })
            if (res.meta.status!==200) {
                this.$message.error('获取数据失败')
            }
            res.data.forEach(item=>{
                item.attr_vals=item.attr_vals.length===0?[]:item.attr_vals.split(' ')
            })
            this.manyTableData=res.data
            
            
        }else if (this.activeIndex=='2')  {
            const{data:res}= await this.$http.get(`categories/${this.cateId}/attributes`,{
                params:{sel:'only'}
            })
            if (res.meta.status!==200) {
                this.$message.error('获取数据失败')
            }
           this.onlyTableData=res.data
            
        }    
    }

    },
    computed:{
        cateId(){
            if (this.addForm.goods_cat.length===3) {
                return this.addForm.goods_cat[2]
            }
            return null
        }
    }
 
}
</script>
<style lang="less" scoped>
.el-checkbox{
    margin: 0px 5px 0px 0px !important;
}
.previewImg{
    width: 100%;
}
.btnAdd{
    margin-top: 15px;
}
</style>